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How do I implement a callback in PHP?
...
The manual uses the terms "callback" and "callable" interchangeably, however, "callback" traditionally refers to a string or array value that acts like a function pointer, referencing a function or class method for future invocation. This has allowed some elemen...
Rails: fields_for with index?
...uestion do |fq| %>
# here you have both the 'question' object and the current 'index'
<% end %>
<% end %>
From:
http://railsapi.com/doc/rails-v3.0.4/classes/ActionView/Helpers/FormHelper.html#M006456
It’s also possible to specify the
instance to be used:
<%= fo...
zsh compinit: insecure directories
What does it mean and how can I fix it?
22 Answers
22
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vim line numbers - how to have them on by default?
...f the .vimrc file is not in your home directory create one with
vim .vimrc and add the commands you want at open.
Here's a site that explains the vimrc and how to use it.
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Get month name from number
...API
From that you can see that calendar.month_name[3] would return March, and the array index of 0 is the empty string, so there's no need to worry about zero-indexing either.
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How assignment works with Python list slice?
...lar syntax:
1) slicing:
b = a[0:2]
This makes a copy of the slice of a and assigns it to b.
2) slice assignment:
a[0:2] = b
This replaces the slice of a with the contents of b.
Although the syntax is similar (I imagine by design!), these are two different operations.
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Generate a Hash from string in Javascript
...same as hash * 31 + char but a LOT faster. It's nice because it's so fast, and 31 is a small prime. Win win there.
– corsiKa
Sep 30 '11 at 21:59
43
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java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist
... Instant Run -> Uncheck the checkbox for instant run. Run your app once and this apk file work properly..
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NERDTree reload new files
...ened in NERDTree , the only way I can see the file added is if I quit vim and start it again .
4 Answers
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Difference between knockout View Models declared as object literals vs functions
...s to set a variable in the function equal to the appropriate value of this and use it instead. This would be like:
var ViewModel = function() {
var self = this;
this.items = ko.observableArray();
this.removeItem = function(item) {
self.items.remove(item);
}
};
Now, if yo...